Title :
Transient stress in solids during shock wave lithotripsy
Author :
Xi, Xufeng ; Zhong, Pei
Author_Institution :
Dept. of Mech. Eng. & Mater. Sci., Duke Univ., Durham, NC, USA
Abstract :
Shadowgraph and photoelastic imaging techniques were used to visualize shock wave propagation and the resultant transient stress field in solids during shock wave lithotripsy (SWL). The highest stress concentration was found to be associated with the superposition of shear waves near the posterior surface of the solid, which suggests a new mechanism of shear-induced fragmentation during SWL
Keywords :
biological effects of radiation; biomechanics; biomedical equipment; elastic waves; photoelasticity; radiation therapy; shock wave effects; stress measurement; photoelastic imaging techniques; posterior surface; shadowgraph imaging techniques; shear waves; shear-induced fragmentation; shock wave lithotripsy; shock wave propagation; solids; stress concentration; transient stress field; Head; Internal stresses; Lithotripsy; Optical pulse generation; Photoelasticity; Shock waves; Solids; Strain measurement; Surface waves; Visualization;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.803939
